alexa Effects of Supplemental Virgin Coconut Oil and Condensed Tannin Extract from Pine Bark in Lactation Dairy Diets on Ruminal Fermentation in a Dual-flow Continuous Culture System
ISSN: 2329-888X

Advances in Dairy Research
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Research Article

Effects of Supplemental Virgin Coconut Oil and Condensed Tannin Extract from Pine Bark in Lactation Dairy Diets on Ruminal Fermentation in a Dual-flow Continuous Culture System

Yang SY1*, Ningrat RWS2, Eun JS1 and Min BR3

1Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT , USA.

2Andalas University, Padang, Indonesia.

3Department of Agricultural and Environmental Sciences, Tuskegee University, Tuskegee, UT, USA.

*Corresponding Author:
Si-Yong Yang
Department of Animal
Dairy and Veterinary Sciences
Utah State University
4815 Old Main Hill, Logan
UT 84322-4851, USA
Tel: +1 435 757 1361
E-mail: [email protected]

Received Date: Jun 23, 2016; Accepted Date: Aug 04, 2016; Published Date: Aug 10, 2016

Citation: Yang SY, Ningrat RWS, Eun JS, Min BR (2016) Effects of Supplemental Virgin Coconut Oil and Condensed Tannin Extract from Pine Bark in Lactation Dairy Diets on Ruminal Fermentation in a Dual-flow Continuous Culture System. J Adv Dairy Res 4:160. doi: 10.4172/2329-888X.1000160

Copyright: © 2016 Yang SY, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The objective of our study was to investigate effects of virgin coconut oil (VCO) and condensed tannin extract from pine bark (PCT), either separately or in combination, as supplements to lactation dairy diets on in vitro ruminal fermentation profiles in a completely randomized design with four independent runs of continuous cultures. Four dietary treatments included: 1) control [CONT; total mixed ration (TMR) without supplement], 2) TMR with VCO (VCOT), 3) TMR with PCT (PCTT) and 4) TMR with VCO and PCT (VPT). Results showed that culture pH was maintained at least at 6.13 across dietary treatments, and supplementing VCO and/or PBE did not influence culture pH. Total volatile fatty acid concentration was similar in response to the supplements. Supplementing PCT decreased ammonia-nitrogen concentration both in PCTT and VPT (P<0.01), while VCO supplementation resulted in no effect on ammonia-nitrogen concentration. Cultures offered VCO and PCT supplementation, either separately or in combination, showed no response on methane production. The decrease in ammonia-nitrogen concentration when PCT-containing diets (PCTT and VPT) were offered is likely attributed to condensed tannins in PCT, which indicates that PCT can affect dietary nitrogen utilization efficiency in vivo through condensed tannins on ruminal nitrogen metabolism. However, dietary concentration of VCO used in this study may have not been enough to manipulate ruminal fermentation.

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